Evaluation of Hydraulic Conductivity and Diffusion Coefficient of Unsaturated Soils from Experimental SWRC| Chapter 2 | Current Overview on Science and Technology Research Vol. 10

 Fine unsaturated soils change their water content on account of climatic environments, pipe failure, and other determinants. These changes produce drying-wetting phases that generate decrease-swelling cycles on account of variations in soil influence and water content. Several theoretical models are used to estimate the hydraulic act of soils (hydraulic conductivity and diffusion cooperative) by fitting the SWRC. The fitting model precision depends mostly on the accuracy of the exploratory points of the SWRC and the fitting model. Because of this, it is advisable to simply use the exploratory data from the SWRC to acquire the hydraulic behavior. Therefore, an treasure based on a data table, that uses an interpolation form with variable enlargements, is proposed. The process approximates the experimental SWRC utilizing a polynomial equation generated each branch (drying and moisting). This procedure clarifies the indirect method and avoids wrongs caused for one SWRC fitting process because it does not demand fitting parameters. The results show that the hydraulic behavior of soils maybe predicted exactly with the projected method than with the usual methods.

Author(s) Details:

J. R. Galaviz-González,
Department of Civil Engineering and Topography, University of Guadalajara, 1421 Blvd. Marcelino García Barragán, Guadalajara-44430, Mexico.

J. M. Horta-Rangel,
Graduate Engineering Department, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Queretaro, Qro. C.P.-76010, Mexico.

E. Rojas-Gonzalez,
Graduate Engineering Department, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Queretaro, Qro. C.P.-76010, Mexico.

M. L. Pérez-Rea,
Graduate Engineering Department, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Queretaro, Qro. C.P.-76010, Mexico.

T. Lopez-Lara,
Graduate Engineering Department, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Queretaro, Qro. C.P.-76010, Mexico.

J. B. Hernandez-Zaragoza,
Graduate Engineering Department, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Queretaro, Qro. C.P.-76010, Mexico.

L. Y. Cabello-Suárez,
Department of Project Engineering, University of Guadalajara, 48 Blvd. José Guadalupe Zuno, Zapopan-45157, Mexico.

Please see the link here: https://stm.bookpi.org/COSTR-V10/article/view/8902